Display screen portion of an incubator with a graphical user interface



FIG. 1 is a front view of a display screen portion of an incubator with a graphical user interface shown on a monitor showing our new design.

FIG. 2 is a back view thereof.

FIG. 3 is a top view thereof.

FIG. 4 is a bottom view thereof.

FIG. 5 is a right side view thereof; and,

FIG. 6 is a left side view thereof.

The broken lines showing the display screen, monitor, and portions of the graphical user interface form no part of the claimed design. 

CLAIM The ornamental design for a display screen portion of an incubator with a graphical user interface, as shown and described. 